Platychasmatinae

Superregnum: Eukaryota
Cladus: Unikonta
Cladus: Opisthokonta
Cladus: Holozoa
Regnum: Animalia
Subregnum: Eumetazoa
Cladus: Bilateria
Cladus: Nephrozoa
Cladus: Protostomia
Cladus: Ecdysozoa
Cladus: Panarthropoda
Phylum: Arthropoda
Subphylum: Hexapoda
Classis: Insecta
Cladus: Dicondylia
Subclassis: Pterygota
Cladus: Metapterygota
Infraclassis: Neoptera
Cladus: Eumetabola
Cladus: Endopterygota
Superordo: Panorpida
Cladus: Amphiesmenoptera
Ordo: Lepidoptera
Subordo: Glossata
Cladus: Coelolepida
Cladus: Myoglossata
Cladus: Neolepidoptera
Infraordo: Heteroneura
Cladus: Eulepidoptera
Cladus: Ditrysia
Cladus: Apoditrysia
Cladus: Obtectomera
Cladus: Macroheterocera
Superfamilia: Noctuoidea

Familia: Notodontidae
Subfamilia: Platychasmatinae
Genera: Cyphanta – Paracyphanta – Platychasma
Name

Platychasmatinae Nakamura, 1956

Type-genus: Platychasma Butler, 1881
References

Schintlmeister, A., 2008: Palaearctic Macrolepidoptera Volume 1: 1–482. Notodontidae
Schintlmeister, A., 2008: Die Gattung Paracyphanta Sugi, 1994 (Lepidoptera, Notodontidae, Platychasmatinae). Nachrichten des Entomologichen Vereins Apollo NF 29 (3): 97–100.
Schintlmeister, A. 2013. World Catalogue of Insects: Notodontidae & Oenosandridae (Lepidoptera). Volume 11: 1–608. Reference page.
Schintlmeister, A & C.L. Fang, 2001, New and less known Notodontidae from mainland China Neue Entomologische Nachrichten band 50: 1–141.

Platychasmatinae is a small East Asian subfamily of the moth family Notodontidae. Only two genera are placed here at present:

Cyphanta Walker, 1865
Platychasma Butler, 1881

Though not all Notodontidae have been assigned to subfamilies yet, it is unlikely that many of these genera incertae sedis will turn out to be Platychasmatinae, as thus family is a rather ancient and distinct group. In fact, a newly discovered species of Platychasma is somewhat intermediate between the two genera, suggesting that this subfamily might actually be monotypic.